Heat dissipation device and electrical connection box, electrical energy storage device, and vehicle comprising such a dissipation device
The heat dissipation device with distributed thermal interface components and heat pipes addresses temperature issues in electric vehicles, enhancing heat exchange efficiency and reducing component size and cost.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- AMPERE SAS
- Filing Date
- 2025-12-11
- Publication Date
- 2026-06-25
AI Technical Summary
Existing electric or hybrid vehicles face challenges with high-intensity current flow causing temperature increases in safety-critical components, leading to potential degradation and the need for oversized components, which increase bulk, weight, and cost.
A heat dissipation device with thermal interface components distributed across multiple zones and heat pipes for efficient heat exchange between hot and cold sources, utilizing angularly oriented sleeves and elastic forces to enhance heat transfer.
Reduces temperature exposure of safety components, avoiding oversizing and minimizing bulk, weight, and cost by expanding heat exchange surfaces despite potential bulkiness, thus promoting effective heat dissipation.
Smart Images
Figure EP2025086677_25062026_PF_FP_ABST
Abstract
Description
[0001] Heat dissipation device as well as electrical connection box, electrical energy storage device and vehicle including such a heat dissipation device.
[0002] The invention relates to a heat dissipation device, particularly for a motor vehicle. It also relates to an electrical connection box for an electrical energy storage device, particularly a battery, comprising such a dissipation device. It further relates to such an electrical energy storage device, particularly a battery, comprising such a box and / or such a dissipation device. It also relates to a vehicle comprising such a storage device, such a box, and / or such a dissipation device.
[0003] In this field, it is known that electric or hybrid vehicles equipped with a battery pack include a casing that houses several electrochemical cells connected together and providing a high voltage at the battery terminals, typically a voltage of several hundred volts.
[0004] It is then necessary to equip the battery with an electrical connection box containing safety electrical components (relays, fuses) in order to cut off the current when needed. These components are connected using busbars through which the battery's input or output current flows.
[0005] In certain situations, the battery supplies or receives a high electrical power. This is the case, for example, during so-called fast charging of the vehicle's battery, or when the vehicle must exert significant traction. In these situations, the flow of a high-intensity current generates a sharp increase in temperature, particularly in areas commonly referred to as "hot spots," such as safety-critical electrical components, which then present an increased risk of degradation. To mitigate this risk, it is common practice to oversize these components. However, this results in significant bulk, an excessive increase in weight, and a higher cost.
[0006] The invention aims to overcome at least in part the previous drawbacks and proposes for this purpose a heat dissipation device, in particular for motor vehicles, said device being configured for heat conduction between, on the one hand, a hot source comprising an electrical component, and, on the other hand, a cold source, said device comprising a thermal interface component, said hot, configured to be in a heat exchange relationship with said hot source, and a plurality of thermal interface components, said cold, configured to be in a heat exchange relationship with said cold source according to a spatial distribution spread over several distinct zones, said device being further configured for heat exchange between said hot thermal interface component and said cold thermal interface components.
[0007] By distributing the exchange surfaces across several points of the cold source from a single hot point, it is possible to expand the exchange surface with the cold source despite the potential bulkiness of the latter.
[0008] In the context of an application to an electrical energy storage device, it is thus possible to reduce the temperature to which the safety components will be subjected and to avoid their oversizing. Indeed, increasing the exchange surface area promotes heat dissipation from the hot source to the cold source.
[0009] According to various additional features of the invention, which may be taken together or separately and which constitute so many embodiments of the invention:
[0010] - said device comprises heat pipes configured for heat exchange between, on the one hand, said hot thermal interface element and, on the other hand, said cold thermal interface elements,
[0011] - the hot and / or cold thermal interface components include sleeves housing said heat pipes,
[0012] - the said hot and / or cold thermal interface element(s) are configured to allow angular orientation of said heat pipes, - said hot and / or cold thermal interface elements comprise a carrier piece, thermally connected to said hot or cold source, and a contact piece, in a ball joint connection with respect to said carrier piece, said corresponding heat pipe being fixed to said contact piece,
[0013] - said load-bearing part includes a housing configured to accommodate said contact part,
[0014] - the contact piece includes a movable rounded projection within said housing,
[0015] - the contact piece includes the aforementioned sleeve(s) housing the heat pipes,
[0016] - said heat pipes are welded, in particular brazed, and / or crimped to said contact parts,
[0017] - the rounded projection of the contact piece of said cold thermal interface elements is located in an axial extension of said sleeve,
[0018] - said cold thermal interface elements include a diffuser linked to said load-bearing part and intended to enter into a heat exchange relationship with and / or in contact with said cold source,
[0019] - said load-bearing piece flares out towards said diffuser by means of curved shapes,
[0020] - said device comprises thermal conduction pads having electrical insulating properties,
[0021] - said bearings are respectively intended to be located between one of said cold thermal interface components and said cold source,
[0022] - said cold thermal interface elements are at least two in number,
[0023] - said hot thermal interface element is substantially in the middle of said cold thermal interface elements,
[0024] - there are two sleeves at the level of the said hot thermal interface component,
[0025] - said sleeves of the same hot thermal interface element are in axial extension of one another,
[0026] - said rounded projection of the contact piece of said hot thermal interface element extends transversely, in particular radially, relative to the sleeves of said hot thermal interface element,
[0027] - said hot thermal interface element is configured to apply an elastic force between said heat pipes and said cold thermal interface elements, - said hot thermal interface element comprises a rod configured to apply said force,
[0028] - said stem comprises an elongated body and a head forming said load-bearing part,
[0029] - said load-bearing part is elastically mobile relative to said body in order to exert said force,
[0030] - said rod includes a spring bearing on said body and exerting said force on said load-bearing part,
[0031] - said body and said load-bearing part slide one inside the other in a translational movement along a longitudinal extension direction of said rod,
[0032] - said device includes a support configured for fixing said hot source and / or intended to be fixed to said cold source
[0033] - said rod includes a nut for fixing said body to said support,
[0034] - said body comprises a pin passing through said support, said nut being fixed to said pin,
[0035] - said hot and / or cold thermal interface elements have a first heat exchange surface in contact with said heat pipe and a second heat exchange surface, intended to come into contact with said hot or cold source in question,
[0036] - said heat pipes are inclined so that, in use, a first zone of the heat pipes in heat exchange with said hot thermal interface element is vertically at a level lower than that of a second zone of the heat pipes in heat exchange with said corresponding cold thermal interface element,
[0037] - said heat pipes are straight,
[0038] - said heat pipes have a rounded cross-section,
[0039] - said heat pipes have a substantially circular cross-section,
[0040] - said heat pipes are sintered.
[0041] The invention also relates to an electrical connection box for an electrical energy storage device, in particular a battery, comprising a hot source, a cold source, and a dissipation device as described above. According to various additional features of the invention, which may be considered together or separately and which constitute so many embodiments of the invention:
[0042] - said electrical component includes an electrical protection component,
[0043] - said electrical protection device includes an electrical relay,
[0044] - said heat source includes electrical connection terminals, electrically connected to said electrical component and in heat exchange relationship with said dissipation device,
[0045] - the said electrical connection terminals are traversed by the said rod,
[0046] - said electrical connection terminals are fixed to said support, in particular by said nut,
[0047] - said enclosure includes an electrical conduction busbar intended to be electrically connected to said heat source,
[0048] - said electrical conduction busbar is traversed by said rod,
[0049] - said electrical conduction busbar is fixed to said support, in particular by said nut,
[0050] - said cold source comprises a plate exhibiting a thermal inertia much greater than the thermal inertia of said hot source.
[0051] The invention further relates to an electrical energy storage device, in particular a battery of accumulators, comprising a connection box and / or a dissipation device as described above.
[0052] The invention also relates to a vehicle comprising an electrical energy storage device, in particular a battery of accumulators, a connection box and / or a dissipation device as described above.
[0053] The invention will be better understood, and other objects, details, features and advantages thereof will become more apparent in the course of the detailed explanatory description which follows, of at least one embodiment of the invention given by way of purely illustrative and non-limiting example, with reference to the accompanying schematic drawings, among which:
[0054] [Fig 1] schematically illustrates in side view a motor vehicle according to the invention; [Fig 2] schematically illustrates in perspective a part of a connection box integrating a dissipation device according to the invention;
[0055] [Fig 3] reproduces figure 2, with some of the parts illustrated according to a longitudinal section plan;
[0056] [Fig 4] schematically illustrates in perspective, in exploded mode, part of the heat dissipation device shown in figure 2;
[0057] [Fig 5] schematically illustrates in perspective, in partially exploded mode, the heat dissipation device of figure 2, completed in relation to figure 4;
[0058] [Fig 6] schematically illustrates in perspective, in partially exploded mode, the heat dissipation device of figure 2, completed in relation to figure 5;
[0059] [Fig 7] reproduces figure 6 in longitudinal section view;
[0060] [Fig 8] schematically illustrates in perspective, in partially exploded mode, the heat dissipation device of figure 2, completed in relation to figure 6;
[0061] [Fig 9] schematically illustrates in perspective, in partially exploded mode, the heat dissipation device of figure 2, completed in relation to figure 8;
[0062] [Fig 10] reproduces a central part of figure 9 in longitudinal section view, in a first and a second configuration;
[0063] [Fig 11] illustrates in side view the dissipation device of figure 2, some of the parts being illustrated according to a longitudinal section plane;
[0064] [Fig 12] illustrates in perspective, in exploded view, some of the parts of the connection box in figure 2;
[0065] [Fig 13] illustrates the connection box of figure 2 according to a longitudinal section plane.
[0066] It should first be noted that the terms "first," "second," "third," etc., are used solely to distinguish the components concerned from one another and do not imply any order or importance of said components. The invention relates to a heat dissipation device, particularly for motor vehicles.
[0067] As illustrated in Figure 1, the invention also relates to an electrical connection box 1, an electrical energy storage device 2, in particular a battery, and a vehicle V comprising such a dissipation device. The latter is placed, for example, in the electrical connection box 1, said box 1 being used to connect the electrical energy storage device 2 to an electrical network 3 of the motor vehicle V. Said vehicle V is advantageously an electric or hybrid vehicle connected to said electrical network 3.
[0068] As shown in Figures 2, 3, 12 and 13, said heat dissipation device is configured for heat conduction between, on the one hand, a hot source 12 comprising an electrical component 14, and, on the other hand, a cold source 16.
[0069] The cold source 16 comprises, for example, a plate 52 having a thermal inertia much greater than that of the hot source 12. The plate 52 may include all or part of a lower face of a housing for the electrical energy storage device. The plate 52 is provided with one or more channels for circulating a heat transfer fluid.
[0070] As shown in Figures 2, 3, 9, 10, 11, 12 and 13, said device comprises a thermal interface element 20, referred to as hot, configured to be in a heat exchange relationship with said hot source 12, and a plurality of thermal interface elements 18, referred to as cold, configured to be in a heat exchange relationship with said cold source 16 according to a spatial distribution divided into several distinct zones R1, R2, as illustrated in Figures 2, 3, 5 and 13. Said device is further configured for heat exchange between said hot thermal interface element 20 and said cold thermal interface elements 18.
[0071] Thus, the heat exchange surfaces are distributed across several points of the cold source 16, radiating from a single hot point, to maximize the heat exchange area with the cold source 16 despite the potential bulkiness of the latter. Preferably, each cold thermal interface element 18 is associated with one of the aforementioned zones R1, R2, ... . These zones R1, R2, ... are advantageously located on the surface of the cold source 16.
[0072] In the embodiment illustrated by figures 2 to 13, said device includes heat pipes 10 configured for heat exchange between, on the one hand, said hot thermal interface element 20 and, respectively, said cold thermal interface elements 18. By "heat pipe" is meant a heat-conducting element allowing a fluid to circulate inside the element, in particular by capillarity and / or by gravity, this in a closed cycle according to a principle of successive evaporation and condensation of the fluid.
[0073] Alternatively, all or part of the heat pipes 10 can be replaced by another heat conduction element.
[0074] Preferably, said heat pipes 10 are straight. They have, for example, a rounded cross-section. In particular, they have a substantially circular cross-section. Said heat pipes 10 may be sintered and / or grooved.
[0075] Preferably, the hot thermal interface elements 20 and / or cold thermal interface elements 18 comprise sleeves 184, 185 accommodating said heat pipes 10. In the illustrated embodiment, such sleeves 184, 185 are provided both at the hot thermal interface element 20, with regard to the illustrated sleeves 185, and at the cold thermal interface elements 18, with regard to the illustrated sleeves 184.
[0076] Advantageously, the hot thermal interface element(s) 20 and / or cold thermal interface element(s) 18 are configured to allow free angular orientation of the heat pipe(s). Thus, for example, when the heat pipe 10 is straight, the longitudinal axis of the heat pipe 10 can be oriented angularly with respect to the said thermal interface element(s) 18, 20.
[0077] Preferably, said hot 20 and / cold 18 thermal interface elements comprise a carrier piece 180, thermally connected to said hot 12 or cold 16 source. Said hot 20 and / cold 18 thermal interface elements comprise a contact piece 181, in a ball joint connection with respect to said carrier piece 180. Said corresponding heat pipe 10 is fixed to said contact piece 181.
[0078] To form said ball joint, said carrier piece 180 may include a housing 182 configured to receive said contact piece, as shown in figures 5, 8 and 9. The contact piece 181 may include a rounded projection 183 movable in said housing 182.
[0079] Advantageously, said load-bearing part 180 has openings 188a, 188b allowing the passage of pins 187a, 187b. Each of said openings 188a, 188b is opposite another opening not shown allowing the pins 187a, 187b to pass through the housing 182 from one side to the other when they are inserted into the openings 188a, 188b. The openings 188a and 188b are separated by a distance strictly less than the diameter of the rounded projection 183 so that these pins 187a, 187b prevent the rounded projection 183 from coming out of the housing 182 after the rounded projection is inserted into the housing 182, when said pins 187a, 187b are inserted into the openings 188a, 188b.
[0080] The said contact piece 181 may include the said sleeve(s) 184, 185 housing the heat pipes 10.
[0081] The said heat pipes 10 can be welded, in particular brazed, and / or crimped to the said contact parts 181.
[0082] For example, said heat pipes 10, in particular one end thereof, is fitted into a respective sleeve 184 and held in said sleeve 184 by welding and / or crimping. The second end of said heat pipes 10 is fitted into a respective sleeve 185 and held in said sleeve 185 by welding and / or crimping.
[0083] Advantageously, the rounded projection 183 of the contact piece 181 of said cold thermal interface elements 18 is located in an axial extension of the corresponding sleeve 184.
[0084] In the embodiments illustrated in the figures, said cold thermal interface elements 18 may include a diffuser 24 connected to said corresponding carrier piece 180 and intended to come into contact with said cold source 16. Said carrier piece 180 and said diffuser 24 are, for example, made of continuous material. Said first cold thermal interface elements 18 are, in particular, made of copper.
[0085] Preferably, although not visible in the figures, the said carrier piece 180 of the said cold thermal interface elements 18 flares out towards the said diffuser 24 by means of curved shapes. Such shapes promote heat conduction within the said cold thermal interface element 18.
[0086] Preferably, the device comprises thermal conductive pads 44 having electrical insulating properties. These pads 44 are respectively intended to be located between one of the cold thermal interface elements 18 and the cold source 16. The pads 44 are intended to be located, for example, between the diffusers 24 and the cold source 16. The pads 44 are advantageously compressible. Alternatively, instead of the pads 44, the device comprises, for example, a layer of paste-like material having thermal conductive and electrical insulating properties.
[0087] The said hot thermal interface element 20 is, for example, substantially in the middle and / or center of the said cold thermal interface elements 18, particularly when the said cold thermal interface elements 18 are two in number as illustrated in the figures.
[0088] The sleeves 185 are here two in number at the level of the said hot thermal interface element 20. They are, for example, in the axial extension of each other.
[0089] Alternatively, there are three of the said cold thermal interface elements 18. In this variant, the three cold thermal interface elements 18 are distributed at 120° to each other around the hot thermal interface element 20.
[0090] Thus, the said cold thermal interface elements 18 are advantageously distributed angularly in a regular manner around each other around the hot thermal interface element 20.
[0091] Similarly, the sleeves 185 are advantageously distributed angularly and regularly from one another at the hot thermal interface element 20.
[0092] Preferably, said rounded projection 183 of the contact piece 181 of said hot thermal interface member 20 extends transversely, in particular radially, with respect to the sleeves 185 of said hot thermal interface member 20.
[0093] As shown in Figures 2, 3, 10, 12 and 13, said hot thermal interface element 20 can be configured to apply a force F between said heat pipes 10 and said cold thermal interface elements 18. Such a force has been illustrated in the figures by an arrow labeled F. This force makes it possible, for example, to compress said bearing 44.
[0094] Preferably, the force F is elastic in nature. The elastic nature of the force arises from the components used to apply it and / or from the elasticity of the materials used.
[0095] In the various embodiments illustrated, said hot thermal interface member 20 comprises a rod 60 configured to apply said force F. Preferably, said rod 60 has thermal conductivity properties so as to form said hot thermal interface member 20. It is, for example, made of copper.
[0096] In the embodiment illustrated in the figures, said rod 60 comprises an elongated body 601 and a head 602 forming the bearing part of the ball joint. Said head 602 is thus elastically movable relative to said elongated body 601 to exert said force F.
[0097] In the embodiment shown in Figure 10, the rod 60 includes a spring 603 bearing against the elongated body 601 and exerting the force F on the head 602. In Figure 10, the diagram on the right shows the spring 603 uncompressed by the supporting part. The diagram on the left shows the spring 603 compressed, which results in the force F being exerted on the heat pipes 10 and the cold thermal interface elements 18, advantageously compressing the bearings 44.
[0098] The elongated body 601 and the head 602 slide into each other in a translational movement along a longitudinal extension direction of the rod 60. This extension direction is represented by arrow D in Figure 10.
[0099] According to the embodiment shown in the figures, and in particular in Figure 10, the elongated body 601 comprises a first longitudinal housing 604 in which the spring 603 is housed. The first longitudinal housing 604 comprises a first bearing surface 605 against which a first end of the spring 603 bears. The supporting piece forming the head 602 comprises a second longitudinal housing 606 in which the elongated body 601 can slide. The second longitudinal housing 606 comprises a second bearing surface 607 against which a second end of the spring 603 bears.
[0100] Said first longitudinal housing 604 and said second longitudinal housing 606 have coaxial cylindrical shapes.
[0101] As illustrated in Figures 2, 3, 12, and 13, the device includes, for example, a support 30, notably made of reinforced ABS. The support 30 can be configured for mounting the hot source 12 and / or for mounting the cold source 16.
[0102] Said rod 60 may include a fixing nut 608 for fixing said application member 40 to said support 30. Said rod 60 may include a pin 609 intended to pass through said support 30. Said fixing nut 608 is fixed on said pin 609.
[0103] According to one embodiment, as more particularly visible in figures 5, 7 and 13, said cold thermal interface members 18 each have a first heat exchange surface 18a in contact with said heat pipe 10 and a second heat exchange surface 18b intended to come into contact with said cold source for heat exchange between said heat pipe 10 and said cold source via said cold thermal interface member 18.
[0104] The diffuser 24 is formed, for example, of a plate. The plate extends here beyond a junction surface between the carrier piece 180 and the diffuser 24 so that the diffuser 24 has a heat conduction surface that is enlarged relative to the carrier piece 180 in the direction of the cold source 16.
[0105] The second cold exchange surface 18b is defined here by a lower face of the diffuser 24. Advantageously, the second cold exchange surface 18b has a shape designed to fit an upper face of the cold source 16, which is here substantially flat. In the illustrated embodiments, the second cold exchange surface 18b is flat.
[0106] The said pad 44 is intended to be located, for example, between the said second cold exchange surface 18b and the said cold source 16, in particular between the said diffuser 24 and the said cold source 16.
[0107] The said hot thermal interface element 20 has, for example, a first heat exchange surface 20a, called hot, in contact with said heat pipe 10 (figure 5) and a second heat exchange surface 20b, called hot, intended to come into contact with said hot source 12 (figure 10), for a heat exchange between said heat pipe 10 and said hot source 12 via said second thermal interface element 20.
[0108] For example, said first heat exchange surface 20a may correspond to the inside of the sleeves 185 into which the second end of the heat pipe 10 is fitted.
[0109] The said cold thermal interface elements 18 enhance the heat exchange between the heat pipe 10 and the cold source 16 in question by their dedicated exchange surfaces, here the cold exchange surfaces 18a, 18b. In addition, the force F provided between the heat pipe 10 and the said cold thermal interface elements 18 promotes contact between them and therefore good thermal conduction.
[0110] More specifically, said rod 60 is configured to exert said force F on said heat pipes 10 so as to press said heat pipes 10 against said first cold exchange surface 18a of each of said cold thermal interface members 18.
[0111] According to the different embodiments illustrated, said heat pipes 10 are inclined so that, in use, a first zone Z1 of the heat pipes 10 in heat exchange relationship with said hot thermal interface element 20 is vertically at a level lower than that of a second zone Z2 of the heat pipes 10 in heat exchange relationship with said cold thermal interface elements 18 (figure 3).
[0112] The said connection box may include one or more 50 electrical conduction busbars intended to be electrically, or even thermally, connected to said hot source 12.
[0113] As described previously, said heat source 12 may include an electrical component 14. Said electrical component 14 may include an electrical protection component. For example, the electrical protection component includes an electrical relay and / or a fuse designed to open in the event of a fault in circuit 3. Said heat source 12 may include electrical connection terminals 150, electrically connected to said electrical component 14 and in a heat exchange relationship with said dissipation device.
[0114] In the embodiment illustrated by the figures, said electrical connection terminals 150 are traversed by said rod 60. Advantageously, said electrical connection terminals 150 are fixed to said support 30, in particular by said fixing nut 608.
[0115] Preferably, the said busbar(s) 50 for electrical conduction are traversed by said rod 60. Advantageously, the said busbar(s) 50 for electrical conduction are fixed to said support 30, in particular by said fixing nut 608.
[0116] Thus, for example, the pin 609 of the rod 60 passes through said support 30. The bus bar(s) 50 of electrical conduction are taken partly sandwiched between the support 30 and said electrical connection terminals 150. Said support 30 is taken partly sandwiched between said elongated body 601 and the bus bar(s) 50 of electrical conduction.
[0117] Referring again to Figures 12 and 13, we see that the support 30 comprises a first wing 32 in the shape of an inverted U, including two lateral sides 34a and 34b. Lateral sides 34a and 34b may each include a notch allowing the passage of a heat pipe 10, respectively. An upper base 36 of the first wing 32 connects its lateral sides 34a and 34b.
[0118] The second hot thermal interface element 20 is fixed to the support 30, for example to the upper base 36. The electrical conduction busbar 50 and / or a first of the electrical connection terminals 150 are also fixed to the support 30, for example to the upper base 36.
[0119] The busbar 50 is intended to be electrically, and possibly thermally, connected, on the one hand, to the first electrical connection terminal 150 of the electrical component 14 by one of its ends, and on the other hand, to the remainder of an electrical circuit of the connection box, in particular to another of its electrical components, not shown. The first connection terminal 150 of the electrical component 14 is located, in particular, at one of the longitudinal ends of the electrical component 14, the electrical component 14 having here an external cylindrical shape.
[0120] Although not illustrated, said connection box is intended to include a second dissipation device identical to the previous one and connected to a second of the electrical connection terminals of said electrical component 14, said second electrical connection terminal being located at a longitudinal end of said electrical component 14, opposite to the longitudinal end provided with said first electrical connection terminal 150.
[0121] The said connection box includes here another support 30', advantageously symmetrical to the previous 30 with respect to a median plane of said hot source 12. Said other support 30 thus includes a second wing 32' in an inverted U is located at the level of said opposite longitudinal end of the electrical member 14. The second thermal interface member of the second heat dissipation device is fixed to said other support 30'.
[0122] In the illustrated embodiment, the first and second wings 32, 32' are integrated into a single frame, forming two opposite sides. This frame defines a housing for the electrical component 14. The frame includes a lower base 56 connecting the second wing 32' to the first wing 32. This lower base 56 is parallel to and fixed to the cold source 16. The electrical component 14 is at least partially located between the first and second wings 32, 32'.
Claims
DEMANDS 1. Heat dissipation device, in particular for motor vehicle, said device being configured for heat conduction between, on the one hand, a hot source (12) comprising an electrical component (14), and, on the other hand, a cold source (16), said device comprising a thermal interface component (20), said hot, configured to be in a heat exchange relationship with said hot source (12), and a plurality of thermal interface components (18), said cold, configured to be in a heat exchange relationship with said cold source (16) according to a spatial distribution spread over several distinct zones (R1, R2, ...), said device being further configured for heat exchange between said hot thermal interface component (12) and said cold thermal interface components (18).
2. Dissipation device according to claim 1 comprising thermal conduction pads (44) having electrical insulating properties.
3. Dissipation device according to the preceding claim in which said pads (44) are respectively intended to be located between one of said cold thermal interface members (18) and said cold source (16).
4. Dissipation device according to any one of the preceding claims wherein said hot thermal interface member (20) is substantially in the middle of said cold thermal interface members (18).
5. Dissipation device according to any one of the preceding claims comprising heat pipes (10) configured for heat exchange between, on the one hand, said hot thermal interface element (20) and, on the other hand, said cold thermal interface elements (18).
6. Dissipation device according to the preceding claim in which said hot and / or cold thermal interface members (18, 20) are configured to permit angular orientation of said heat pipes (10).
7. Dissipation device according to the preceding claim in which said hot and / or cold thermal interface members (18, 20) comprise a part carrier (180), thermally connected to said hot or cold source (12, 16), and a contact piece (181), in ball joint connection with respect to said carrier piece (180), said corresponding heat pipe (10) being fixed to said contact piece (181).
8. Dissipation device according to any one of claims 5 to 7 wherein said hot thermal interface member (20) is configured to apply a force between said heat pipes (10) and said cold thermal interface members (18).
9. Dissipation device according to any one of claims 5 to 8 in which said heat pipes (10) are inclined so that, in use, a first zone of the heat pipes (10) in heat exchange relationship with said hot thermal interface element (20) is vertically at a level lower than that of a second zone of the heat pipes (10) in heat exchange relationship with said corresponding cold thermal interface element (18).
10. Electrical connection box for electrical energy storage device, in particular accumulator battery, comprising a hot source (12), a cold source (16) and a dissipation device according to any one of the preceding claims.
11. Electrical energy storage device, in particular accumulator battery, comprising a dissipation device according to any one of claims 1 to 9.
12. Vehicle comprising a dissipation device according to any one of claims 1 to 9.